Dock or pontoon ladder



FIG. 1 is a perspective view of a dock or pontoon ladder, showing our design;

FIG. 2 is a right side elevation view;

FIG. 3 is a front elevation view;

FIG. 4 is a back elevation view;

FIG. 5 is a top view; and,

FIG. 6 is a bottom view.

The left side is a mirror image of the right side. 

The ornamental design for a dock or pontoon ladder, as shown. 